Flush-tank mold



l 1,476,684 F. A. BLACK ET AL Dec. 11 1923.

FLUSH TANK MOLD Filed June 15. 1921 :s sheets-sheet 1 www m wom n XMS/A mi 0.0,( Q6 rml EL j W To.

Dec. 1l 1923.

F. A. BLACK ET Al.

FLUSH TANK MOLD Frank Akock hd Fred D..S1 o\nkx).

AH/ovnen Dec. 1v1 1923. 1,476,684

F. A. BLACK ET AL FLUSH TANK `MOLD Filed June 15 1921y 3 Sheets--Sheet-5 MMM@ l I3 /5 Frank kmok w E Fred Dmnh (fm/@meg Patented Dec. l1, 1923.A

UNITED STATES PATENT omen.

FRANK A. BLACK, or DETROIT, AND 'FRED D. sTANLY, or eaAnD RAPIDS, `MICHIGAN.

FLUSH-TANK MOLD.

Application filed June 13, 19211. Serial No. 477,329.

To all ywhom it may concer/ni Be it known that we, FRANK A. BLACK and FRED D. STANLY, citizens of the United States of America, residing at Detroit and Grand Rapids, respectively, in the counties of Wayne and Kent and State of Michigan, have invented certain new and useful Improvements in Flush-Tank Molds; and we do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a novel construction of mold for the moulding of tanks and particularly flush tanks. Tanks of this character are comparatively narrow in width and of relatively great depth and in the formation of the same from plastic cementitious material, we have devised a novel collapsible form of mold which may be readily assembled and held in position for the entrance of, the material therein, and which, after the composition has hardened and set may be as easily disassembled and removed from the tank made and thereafter again used for the production of other tanks. The invention comprises many novel .constructions and arrangements of parts for effectively attaining the above described ends, together with many others not at this time specifically stated, but which will appear fully and in detail as understanding of the invention is had from the following description, taken in connection with the accompanying drawings, inwhich,

Fig. 1 is 'a perspective view of the mold completely assembled vand -ready for the pouring of the plastic cementitious composition therein. j

Fig. 2 is a horizontal section substantially on the plane of line'2-2, of Fig. 3, looking upwardly 'in the direction indicatedby the arrows. y

Fig. 3 is a vertical section taken length- Wise and substantially centrally of the mold shown in Fig. 1. j

.Fig 4 'is a transverse vertical section therethrough substantially on the plane of line 4--4,` of Fig. v3. y

Fig. 5 is a fragmentary horizontal' section near the lower'end and at the rear sideof the mold.

Fig. 6 is a horizontal section throughthe tank formed by the mold, the inner or core portions of the mold being shown in partly disassembled relation to each other, and

Fig. 'Z is a perspective view of the tankY made and the partsof the mold used, the i same being more or less disassembledv and shown in inverted position. Y

Like kreference characters referto like parts in the different figures of the drawings.

The mold comprises an outer shell and an inner core, each made up of a number of parts. In the yconstruction ofthe outer shell, a base 1 is used from which, at each end, a wide ear 2 projects, whiley from one side a plurality of pins 3 extend upwardly as shown lin Fig. 3. Associated with this base is a vertical back 4 and a member including a front- 5 withsides turned therefrom toward the back and coming into contact engagement therewith when the back and said member are verticallyy positioned on thefbase. The back-4 and the member associated therewith have Vopenings in their lower edges into which certain of the pins 3 extend and it will be noted that the back 4 on its inner side is thickened at portions thereof to make shoulders 7 the edges of the sides 6 seating at the angles made by said and formed on its inner side with curvedV surfaces 11 to obviate sharp corners onthe tank madein the mold, as is evident.

Within the outer shell thus madefan inner hollow core is placed. In the construction of the core two back members k12 and 13 are used, being formed with bevelled edges 14 where they cometogetherfand the core is completed by two members each including a front section 15 and a side section 16,

the adjacent edges of the front sections being bevelled, as indicated at 17, Ihese inner core members are all formed with inwardly projecting lugs 18 adjacent their lower edges in which lopenings are made for the recep-l tion of 'certainother'o-f the pins 3 on the base 1 so located that the core members the vrea-r edgesof the sideY sections 16 come against vthe inner sides ofthe back sections 1,2 and 13st the ,outer edges thereof, as best shown in Fig. ,2. YTurn buttons 19 are pivotallymounted on Vthe section 12 and on one o'f'the front sections 15 andinay be turnedito pass over the bevelled edges at 14' and 17 to hold the same together. In addition eac-h of the sections 12 and 13 and 15 is provided on its inner side with a loop i, and brace bars 21 having Vdown-turned ends22' are disposed between theloops, the

. ends 22'of the bars insertinginto' the loops positioned oppositely to each other and serv. ing to hold the upper portions. of the core against movement toward eachother from Ypressure of the composition whenit is in.

troduc'ed into the mold. Y

The core is completed by a. cover plate 23 of'a'size toV completely coverthe open end of the core and the edges ofthe members forming the core. Two barsr24 are pivotally connected to the under side of the plate123`fat a point midway between their ends, the bars being of a length that when turnedto pass directly across the plate, the ends of the bars bear against the inner sides of the core sections 12, 13 and 15. Also, two buttons 25 are .pivotallyi mounted on the under side of the `cover plate, one adjacent each end thereof,ybeing so positioned that whenfturned outwardlyl the ends vof the buttons bear againstthe endy sections 16 of the core, tliismeans servingto further brace the core' so that it is rigid Vagainst pressure of the composition, and also niakingtight joints between ythe adjacent edges of the parts making up the coresoas to prevent leakage of the composition at the joints. It is to beunderstood that in putting ,theI form togethertheparts are. first placed in invertedposition, as shown in Fig. 7 thereby permittingv the operation ofthe buttons A25 and the bars 24, and the attachment ofthe cross bars21, after which the form is turned to the position shown in Figs. 1, 3 and 4, and a cover 26k placed 'thereoveix v This cover has outwardly extending wide ears 27, similar to'theears 2 on-the base`51 land is held place by pins 28 which pass,tliroughopen ings in the cover and into properly positioned holes in the upper edges of the parts making up the outer .shell ofthe mold.

The cover 26 has three openings-29, 30

and the outer shell.

and 31 therein in the first two of which plugs at their upper ends to receive nuts 36, thereby securely holding the outer shell together.

The composition'i's 'entered into the mold through the opening 31 and, is-of freely flowing plastic nature" so that it completely 32 and 33 are inserted, each at its lower end Y `fills' all of the space betweenthel inner core i The outer"V shelly `is first disassociated kby removing the nuts 36, removing theplugs 32 and'33 Vand/the pins 28,'also removing the pins 37 lwhich are inserted through the back 4 and into thesections `12 and 13 ofthe core, after which the mold is inverted so as to rest thesame on the plate 26, the bolts 10 then being` removed.` With the parts thus'disconnected, the plateY away from the tank38 lwhich-has been made; The core members may ythen-be separately re moved, after turning'the vvarious bars 24 and buttons 19 and 25 to inoperative positions andk removingV the cross bars 21.` This leaves a completeta-nk with openings inthe bottoni where the plugs 32 Vand 33 were positioned, andalso with openings in the back nearrthe upper edge where the pins 37 'were' positioned.z These-latter openings ico are of utility in attaching the tank to a` wall or other support where'it is to be used,

and'those in the bottom are for the installav tionk ofthe different fixtures which go'with the tank, as will'be readily understood.

A mold made in the manner vdescribed is very practical and eiiicientvfor the production of flush tanks.y A smooth tank on both the inside and outside is made -i'n' a, single piece and at a relativelylow cost. No particular iinishis requiredother than coating it'with, a water proof veneer'A of proper composition. The coverfplate-26 serves to keep the under side of thebottom perfectly smooth except at the lentrance opening 31 andthis portion of the bottom of the tank thickness, no irregularities'in thicknesscoo curring, while lfforgetting the tank from the mold, the vrmold is easily disassembled. All of these features combine to make'the mold one of practical ymerit. The appended iso claims define the invention and We consider ourselves entitled to all forms of structure coming within their scope.

We claim:

1. A mold comprising an outer shell formed or a plurality of separable pieces, means for detachably connecting the same together, pins projecting upwardly from the bottom side or base of the outer shell, an inner core formed of a plurality of separable back and front and side pieces positioned on the base in spaced apart relation from the back, front and sides of the outer shell, said core pieces having lugs at their lower edges to join with said pins, a cove-r for the core pieces spaced from the upper side of the shell, and means to detachably secure the core pieces together, substantially as described.

2. A construction containing the elements in combination defined in claim 4, said cover plate for the shell having three openings therethrough, and a plug filling each of two of the openings and provided at its lower end with a pin passing through the core cover plate, substantially as described.

3. A core for a mold comprising twoback plates having bevelled overlapping adjacent edges, means for holding said plates from lateral separation, two members each vincluding a front and a side section having overlapping bevelled adjacent edges, means for holding said members from lateral separation, a base plate, means on the plate with which said back plates and members of the core have detachable connection, a cover plate for the core resting on the upper edges of'said back plates and front and side members of the core, bars pivotally Ymounted on the under side of the co-ver plate adapted to be turned to engage Withnected at their ends to and disposed between the front and back of the core, substantially as described.

4. A core for a mold comprising two back plate sections having adjacent edges bevelled and overlapping, a button on one section mounted to turn and pass in front of the adjacent portion of the other section, two combined front and side sections also having adjacent edges bevelled and overlapping, a button on the front section of one of said members likewise adapted to be turned to pass across to the other section, bars detachably connected at their ends to and disposed between the front and back of the core, and a cover plate for the core detachably secured in fixed relation thereto, substantially as described. v y

In testimony whereof we aix our signatures.

FRANK A. BLACK. FRED D. STANLY. 

